Carbureting apparatus



(No Model.) 3 'Sheets sheet 1. *W. DAWSON. GARBURETING APPARATUS.

No. 429,426. Patented June 3, 1890.

' 1 IVE ES.-

(No, Model.) Sheets-Sheet 2.

W. DAWSON.

GARBURETING APPARATUS.

No. 429,426. A Patented June 3, 1890.

I ITNESSES: Q J INVENTOR fi zc-Afi m: mums 721588 (10., mow-LimoWASHINGTON, n. c

11v VENTOIR 3 Sheets-Sheet 3.

Patented June 3, 18.90.

(No Model.)

W. DAWSON.

I GARBURETING APPARATUS. No.- 429,426.

UNITED STATES PATENT @FFICE.

\VILLIAM DAWSON, OF PHILADELPHIA, PENNSYLVANIA.

CARBURETING APPARATUS.

SPECIFICATION forming part Of Letters Patent NO. 429,426, dated June 3,1890. Application filed June 24, 1889. Renewed April 11, 1390. SerialNo. 347,454. (No model.)

To aZZ whom it may concern.- Be it known that 1, WILLIAM DAWSON, ofPhiladelphia, in the State of Pennsylvania, have invented certain newand useful Improvements in Oarbureting Apparatus,whereof the followingis a specification, reference being had to the accompanying drawings.

My invention relates to that class of devices in which a current of airunder pressure (preferably obtained from the air-brake system of thetrain of cars) is carried through carbureting devices, where it ischarged with the vapor of gasoline or other volatile hydrocarbon, andthence conducted to proper burners within the cars. The great majorityof cars have heretofore been supplied with lampfixtures intended forother kinds of illuminant, which fixtures are not only costly in anentirely new arrangement of fixtures, thus sacrificing those which hadbeen previously used, as above stated. My improvements are intended toovercome this necessity and to permit the retention of existinglamp-fixtures, or rather of the type of lamp-fixtures which haveheretofore been most popular.

Other objects of the invention will be stated hereinafter.

Referring now to the drawings, Figure 1 represents a partial transversevertical section through the upper portion of an ordinary passenger-car,showing in elevation such a lamp-fixture as has heretofore beengenerally used for oil-lamps, &c., and also showing a partial verticalsection through the carburetor which is applied thereto. Fig. 2 is avertical section, on an enlarged scale, through the carburetor andlamps. Fig. 3 is a top or plan view of certain of the details; and Fig.4 represents a longitudinal section through the car-roof and carburetingdevices placed thereon, showing a system of three lamp-fixtures varyingslightly in their arrangement from those before shown.

The roof of the car'is represented at A,from which are suspended thelamps G G, having shades H, as shown, and above them chimneys I, passingup through the car-roof and terminating in hoods L. I accommodate thisarrangement to the carbureting system in the following manner; Acylindrical shell B, of sheet metal, closed, except as hereinafterdescribed, contains the carburetor proper, which consists of a series ofsheets of flannel O stretched upon metal frames D, properly supportedwithin said shell. The inlet-pipe for the air-current is shown at E,said pipe being provided with jets 6, arranged so as to distribute theentire current among the sheets of flannel. The exit-pipe F leads fromthe other side of the shell down through the roof of the car andcommunicates with the branches ff of the burners.

The carburetor is charged'with gasoline by means of a vertical pipe M,entering through the top and arranged along one side, but havinghorizontal inwardly-proj ectin g jets m, by means of which the gasolineis thrown upon each one of the sheets of flannel. Said pipe has at itsouter end a funnel N and stopcock n for convenience in charging.

The carburetor is arranged immediately above the lamps, whose chimneys Ipass through it, as shown, said passage being accommodated as follows:The shellB is pierced at the top and bottom to admit the passage ofstout metal cylindrical pipes K, (which forma part of the chimneys,) butwhich are firmly secured by means of flanges, as shown, to the shellproper, so as to obviate any danger of a leakage at the joints. Thesheets of flannel C are of course cut away to permit the passage of thecylindrical pipes K, and therefore require to be sustained againstsagging, which is accomplished in the following manner: Metal rings Q(see Fig. 3) are sewed into the edge of the flannel around the .holesand are fastened to uprights J, arranged diametrically opposite to oneanother and resting upon the bottom of the shell B, thus maintaining thesheets of flannel at the proper distance apart and protecting them fromcontact with the metal of the pipes K, which by becoming overheatedmight injure the carburetor.

Referring now to Fig. 4, the group of three lamp-fixtures is arrangedand supplied in the following manner: The central fixture of the grouphas burners G G, arranged, in this ICO instance, longitudinally with thecar, (instead 7 of across it, as in Fig. 2,) but otherwise similar intheir character. Said burners have chimneys II, above which is thecarburetor B, constructed as has just been described, but having inaddition to an exit-pipe F (similar to the pipe F before mentioned) twoother exit-pipes P P, running lengthwise of the car and terminating inclosed vessels P P arranged over the lamp-fixtures G G respectively.structed substantially like the inclosing-shell of the main carburetor;but they differ therefrom in having no carbureting system within them,being small receptacles, into which the earbureted vapor or gas passesbefore supplying the other burners. The chimneys I I", respectively, ofsaid burners pass through the receptacles I" P in the same manner thatthe chimneys I pass through the carburetor B, and they serve a similarpurposeviz., the heating up of the vapor prior to its passage to theburners, in order to maintain its illuminatingpower at the highestpoint. The desirability of thus heating the vapor in this class ofdevices is well known, and various apparatus have been devised to effectthat purpose; but I deem the auxiliary receptacles P P highlyadvantageous, especially where the members of the group of burners areat some distance apart, as in the instance shown. The burners G2 G areof course supplied, respectively, by means of the pipes F F Theoperation of the device is as follows: The carburetor is first chargedby pouring in a sufficient quantity of gasoline through the pipe M tosaturate the sheets of flannel O, after which the cock at is closed andthe aircurrent is admitted at the pipe E. Said current passes equallyover the surfaces of the sheets and becomes charged with vapor, passingout at the exit-pipes to the burners. The

These vessels P P are conair-brake system for the lighting of cars; nor

products of combustion pass out through the chimneys, maintaining thetemperature within the carburetor proper and the auxiliaryreceptacles,and thus producing,asbefore stated, auniform degree ofilluminating-power in the vapor.

Having thus described my invention, I wish it to be understood that I donot claim, broadly, the use of a carburetor in connection with the do Iclaim, broadly, the combination, with a carburetor, of passages forproducts of combustion to heat the same.

I claim- 1. The combination of the burners situated within the car, thecarburetor shell mounted upon the car-roof, the chimney-pipes passingthrough said shell, but secured thereto by close joints, the sheets ofabsorbent 1naterial suspended upon frames within said shell, the ringssecured in the edges of said sheets around the chimney-pipes, and theuprights on which said rings are mounted, said carbureting devices beingprovided with inlet, exit, and charging pipes, substantially as setforth.

2. The combination of the central carburetor, the burners arrangedbeneath the same and supplied therefrom, the chimneys therefor whichpass through said carburetor, the auxiliaryreceptaclescommunicating withsaid carburetor, the burners arranged beneath said receptagles andsupplied therefrom, and the chimneys of said last-mentioned burnerspassin g through the said receptacles, respectively, substantially asset forth.

M. DAWSON. lVitnesses:

EDWARD FELL LUKENs, JAMES H. BELL,

